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The correct order of regions of vertebrae,from superior to inferior,is


A) thoracic \rarr lumbar \rarr sacrum \rarr cervical \rarr coccyx.
B) cervical \rarr lumbar \rarr sacrum \rarr thoracic \rarr coccyx.
C) cervical \rarr thoracic \rarr lumbar \rarr sacrum \rarr coccyx.
D) lumbar \rarr sacrum \rarr cervical \rarr thoracic \rarr coccyx.
E) sacrum \rarr cervical \rarr thoracic \rarr lumbar \rarr coccyx.

F) A) and B)
G) A) and C)

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What is the correct order of structues that a motor nerve stimulation encounters when triggering a contraction?


A) motor nerve \rarr synaptic cleft \rarr sarcoplasmic reticulum \rarr sarcolemma \rarr troponin
B) motor nerve \rarr synaptic cleft \rarr sarcolemma \rarr sarcoplasmic reticulum \rarr troponin
C) motor nerve \rarr sarcoplasmic reticulum \rarr synaptic cleft \rarr sarcolemma \rarr troponin
D) motor nerve \rarr sarcolemma \rarr sarcoplasmic reticulum \rarr synaptic cleft \rarr troponin
E) motor nerve \rarr sarcolemma \rarr synaptic cleft \rarr sarcoplasmic reticulum \rarr troponin

F) All of the above
G) A) and E)

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A maximal sustained muscle contraction is called


A) a twitch.
B) a threshold.
C) tetanus.
D) tone.
E) summation.

F) A) and E)
G) B) and C)

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List the three types of cartilage and give a location of each type.

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1.Hyaline cartilage is found in the joints at the ends of the long bones,in the nose,at the ends of the ribs and the larynx and trachea. 2.Fibrocartilage is found in the discs between the vertebrae and in the disks between the bones of the knees. 3.Elastic cartilage is found in the ear flaps and epiglottis.

List the five major functions of the skeletal system.

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1.The skeleton supports the body.
2.The ...

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The type of bone tissue that has lacunae,concentric circles around a central canal,and is found in the middle portion of a long bone is


A) spongy bone.
B) compact bone.
C) red marrow.
D) yellow marrow.
E) epiphyses.

F) A) and E)
G) D) and E)

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Which molecule can be used directly to regenerate ATP?


A) ADP
B) glucose
C) lactate
D) creatine phosphate
E) tropomyosin

F) A) and E)
G) A) and B)

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If your bones were "pulled out" you would perhaps resemble a large pancake with eyes.Which of the following would NOT be affected?


A) substantial body movement (walking, etc.)
B) storage of calcium, phosphorus, and fat
C) blood cell production
D) protection of brain and other soft organs
E) detection of stimuli

F) A) and C)
G) B) and D)

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A structure that reduces the weight of the skull and drains into the middle ear would be


A) a fontanel.
B) a diaphysis.
C) yellow bone marrow.
D) red bone marrow.
E) a sinus.

F) A) and E)
G) B) and C)

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E

Jack broke his right leg in a football accident.He has had a cast on for about 2 months.Now that the cast is off,Jack has found that his right calf is significantly smaller than his left calf.Why is this?


A) The unused right calf atrophied.
B) When you break a bone, the attached muscle is also torn. Therefore, it gets smaller.
C) Calf muscles are composed of fast-twitch fibers and tend to grow larger over time.
D) The left calf probably hypertrophied in compensating for the broken leg during walking.
E) This is highly unusual and suggests some type of muscle disease.

F) C) and D)
G) A) and E)

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Name the neuromuscular transmitter that is released at the axon terminal.


A) sodium ions
B) calcium ions
C) ATP
D) creatine phosphate
E) acetylcholine

F) B) and E)
G) A) and D)

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E

The knee is an example of a(n)


A) immovable joint.
B) slightly movable joint.
C) cartilaginous joint.
D) immovable synovial joint.
E) movable, synovial joint.

F) A) and B)
G) D) and E)

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Which of the following is NOT true about the vertebrae?


A) They are part of the appendicular skeleton.
B) They form a dorsal backbone.
C) They help form four curvatures of the spine.
D) They are separated by intervertebral disks.
E) They help protect the spinal cord.

F) C) and D)
G) B) and D)

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What disease is an abnormal lateral curvature of the spine?


A) rheumatoid arthritis
B) bursitis
C) osteoarthritis
D) osteoporosis
E) scoliosis

F) A) and B)
G) C) and D)

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What is the name of the muscle that you sit on?


A) deltoid
B) quadriceps femoris group
C) hamstring group
D) gluteus maximus
E) pectoralis major

F) C) and E)
G) C) and D)

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Which statement is NOT true regarding cross bridges?


A) They involve the use of Ca2+.
B) They are used to split ATP.
C) They form a complex with actin.
D) They are extensions of myosin molecules.
E) They attach to active sites on myosin.

F) B) and D)
G) B) and C)

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The conversion that supplies the required energy for muscle contraction might be illustrated as


A) ATP \rarr ADP + (P) .
B) AMP \rarr ATP.
C) glucose \rarr O2 + lactic acid.
D) O2 \rarr lactic acid + CO2.
E) glucose + O2 \rarr water + lactic acid.

F) A) and E)
G) C) and E)

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What cell type takes calcium from the blood? What cell type deposits calcium into the blood?


A) osteoclasts; osteoblasts
B) osteocytes; osteoclasts
C) osteocytes; osteoblasts
D) osteoblasts; osteocytes
E) osteoblasts; osteoclasts

F) B) and E)
G) None of the above

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Jeremy has broken his leg during a soccer match.Although this is bad,from a healing standpoint,it is not as bad as if he had torn his cartilage.

A) True
B) False

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If you change your hands from a position where they are folded together to where they are cupped to collect a handful of water,you have mainly rotated which arm bone(s) ?


A) humerus
B) scapula
C) ulna
D) radius
E) carpels

F) A) and E)
G) A) and B)

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